Special drugs are added to water in an amount of 5-10% of the weight of cement in a solution that is kneaded on this water.
The most recently Ing. WITH. P. Shelyapin proposed adding a lime-bitumic paste to a cement solution, which is a mechanical mixture of calcium oxide (17 ° 0) and water (50%). The pasta is obtained at the time of repayment of the burned lime by the addition of bitumen heated to 160 ° C to 160 ° C and thoroughly and rapid mixing of the mixture. While added to a cement solution in an amount of 15-20% of the weight of cement1, the paste breaks up as the calcium oxide hydrates goes into calcium carbon dioxide, and free bitumen due to its great tendency to adsorption envelops all the voids of the solution of the solution. Paste is added to the water measured to clip the solution, and the water located in the paste is counted in the amount of water prescribed for the solution.
